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6efddac288
Expand the primary span of E0277 when the immediate unmet bound is not what the user wrote:
```
error[E0277]: the trait bound `i32: Bar` is not satisfied
--> f100.rs:6:6
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6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
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help: this trait has no implementations, consider adding one
--> f100.rs:2:1
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2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
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3 | impl<T: Bar> Foo for T {}
| --- ^^^ ^
| |
| unsatisfied trait bound introduced here
```
Fix #40120.
21 lines
976 B
Plaintext
21 lines
976 B
Plaintext
error[E0277]: the type `[{integer}]` cannot be indexed by `&usize`
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--> $DIR/suggest-dereferencing-index.rs:6:42
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LL | let one_item_please: i32 = [1, 2, 3][i];
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| ^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[{integer}]>` is not implemented for `&usize`, which is required by `[{integer}; 3]: Index<_>`
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= help: the trait `SliceIndex<[{integer}]>` is implemented for `usize`
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= help: for that trait implementation, expected `usize`, found `&usize`
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= note: required for `[{integer}]` to implement `Index<&usize>`
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= note: 1 redundant requirement hidden
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= note: required for `[{integer}; 3]` to implement `Index<&usize>`
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help: dereference this index
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LL | let one_item_please: i32 = [1, 2, 3][*i];
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0277`.
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